As regards to Aquarium Depot , myself running a major company(my company) for 25 + years one thing we're taught before ever starting a business is know your product. What you're going through, tells me aquarium depot has no business being in the business selling a product they do not know. Tells me, they do not know what they're selling and they don't care about the customer. They just care for the almighty dollar. myself running my company the first thing we always remember ,ALL my employees is we treat others as we want to be treated. Talk to them see what happens, but like I say," fool me once but you won't fool me twice." I don't buy from any company that does what they do.
Sorry to hear what you're going through